Sports
Triathlon Performance Calculator
Build a full triathlon finish-time budget from swim, transitions, cycling, and running while testing pace and distance changes live.
Swim–bike–run clock
Assemble a finish-time budget from leg-specific pace units
Each leg is calculated in its natural unit, converted to minutes, then joined through both transitions.Race timeline
Leg proportions and transition gates
Detailed calculation process
Convert every leg to minutes before summing
General formulas
ts = (ds / 100) × pstb = 60db / vbtr = dr × prtT = t1 + t2tfinish = ts + t1 + tb + t2 + trSharei = ti / tfinish × 100Symbols and units
Worked substitution with the current race plan
Course ledger
Checkpoint times and shares
| Segment | Distance / basis | Speed or pace | Segment time | Cumulative time | Finish-time share |
|---|
Practical examples
Race planning
- Compare the time saved by a small bike-speed increase with a run-pace improvement.
- Build an Olympic-distance target from separately tested swim, bike, and run abilities.
- See when transition practice offers more time than a marginal pace change.
Useful inputs
Use sustainable race values
- Enter open-water pace rather than pool best pace.
- Use expected course-adjusted bike speed, not maximum speed.
- Include realistic transition movement, equipment, and mount/dismount time.
Limitations
The finish projection assumes constant average pace or speed for each leg. It does not model elevation, wind, currents, drafting rules, aid stations, congestion, temperature, mechanical events, fatigue coupling, or penalties. Training and medical decisions require individualized professional guidance.
Triathlon performance FAQ
Why is bike time divided by speed?
Distance divided by km/h gives hours; multiplying by 60 converts the result to minutes.
Are transition times part of the official finish?
Yes. This calculation includes both transitions in the total.
Can I use any race distance?
Yes. Enter the measured distances and appropriate sustainable pace assumptions.